CVE-2026-0581
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA vulnerability was determined in Tenda AC1206 15.03.06.23. Affected by this issue is the function formBehaviorManager of the file /goform/BehaviorManager of the component httpd. Executing a manipulation of the argument modulename/option/data/switch can lead to command injection. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe Tenda AC1206 router firmware 15.03.06.23 contains a command injection vulnerability in the httpd web server's /goform/BehaviorManager endpoint. The formBehaviorManager function fails to sanitize user-supplied input in the modulename, option, data, and switch parameters before passing them to a system shell, allowing unauthenticated remote attackers to execute arbitrary commands with root privileges.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 15.03.06.23CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm device is a Tenda AC1206Access the router's web administration interface and check the device model information, typically found on the status or system settings pageAffected if The device is not a Tenda AC1206 router
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Identify the installed firmware versionLog into the router's admin panel and navigate to the System Settings, Administration, or Firmware Upgrade section to view the current firmware version. Alternatively, access the device via telnet or SSH and check /etc/version or /proc/firmware_versionAffected if The firmware version is exactly 15.03.06.23
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Verify the httpd web service is runningAttempt to access the router's web interface via HTTP (port 80) or HTTPS (port 443) from a connected client. Confirm the httpd process is active by accessing the device via telnet/SSH and running 'ps | grep httpd'Affected if The httpd web server is not accessible or not running
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Check if the BehaviorManager endpoint is exposedSend an HTTP GET or POST request to http://<router-ip>/goform/BehaviorManager or attempt to access the page through the web browser. The endpoint is present if the router responds (even with an error) rather than returning a 404Affected if The /goform/BehaviorManager endpoint is accessible and responds to requests
A Tenda AC1206 router running firmware version 15.03.06.23 with the httpd web server active and the /goform/BehaviorManager endpoint exposed is affected by this vulnerability.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate the Tenda AC1206 to the latest firmware version from Tenda's support website. If no patch is available, disable the affected httpd service, restrict administrative access to trusted IPs, or replace the device.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-0581 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-0581 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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